During a holiday with friends Clare and Guy, Phil Mee tells his wife Maggie that he's leaving her. And when he moves out and gets his own flat, finances force her to look for a job.

Maggie starts work at the travel agency, but finds she's no good at her job and then explodes when Phil comes in to book a romantic weekend break with Anna. Boss Jeff is prepared to let her go – but colleagues Karen and Helen launch a protest. Meanwhile, Maggie learns about her father’s serious health problems.

Maggie and Phil see a mediator (Sam Kelly) to divide up the assets but Maggie discovers Phil is being less than honest about his earnings and she threatens to bring in the Child Support Agency. Later, she goes out with her colleagues – who now regard her as Mother Hen – and she wakes up with a sexy young man.

Maggie is embarrassed about asking for the morning-after pill following her one-night stand with Smudge. She decides she needs companionship not sex, so her friends arrange for her to meet a blind date at a dinner party, but then Maggie starts spending time with Guy (jogging, climbing, motorbiking), making Clare jealous. Maggie is also angry that Anna has moved in with Phil, while the kids are exploiting the situation.

Maggie begins a tentative relationship with teacher Paul, but her attempt to keep it a secret is almost ruined when Phil turns up with the kids after a relationship-ending row with Anna. Maggie's friends throw a surprise 40th birthday party for her, while she has to make a decision between the two men in her life.